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Java > Open Source Codes > edu > rice > cs > drjava > model > repl > newjvm > InterpreterJVMTest


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33
34 package edu.rice.cs.drjava.model.repl.newjvm;
35
36 import edu.rice.cs.drjava.DrJavaTestCase;
37 import edu.rice.cs.drjava.model.repl.DynamicJavaAdapter;
38 import edu.rice.cs.drjava.model.repl.ExceptionReturnedException;
39 import edu.rice.cs.drjava.model.repl.JavaInterpreter;
40
41 import java.util.Hashtable JavaDoc;
42
43 /**
44  * simple test suite over InterpreterJVM
45  */
46 public final class InterpreterJVMTest extends DrJavaTestCase {
47   private InterpreterJVM jvm = InterpreterJVM.ONLY;
48   private Hashtable JavaDoc<String JavaDoc, InterpreterData> _debugInterpreters;
49   private JavaInterpreter _interpreter1;
50   private JavaInterpreter _interpreter2;
51   private JavaInterpreter _interpreter3;
52   
53   private void _addInterpreter(String JavaDoc name, JavaInterpreter interpreter) {
54     InterpreterJVM.ONLY.addInterpreter(name, interpreter);
55   }
56   
57   public void setUp() throws Exception JavaDoc {
58     super.setUp();
59     _debugInterpreters = InterpreterJVM.ONLY.getInterpreters();
60     _interpreter1 = new DynamicJavaAdapter(new ClassPathManager());
61     _interpreter2 = new DynamicJavaAdapter(new ClassPathManager());
62     _interpreter3 = new DynamicJavaAdapter(new ClassPathManager());
63   }
64   /**
65    * ensures that our InterpreterJVM adds named debug interpreters correctly
66    */
67   public void testAddNamedDebugInterpreter() {
68     assertTrue(_debugInterpreters.isEmpty());
69     _addInterpreter("interpreter1", _interpreter1);
70     assertSame(_interpreter1, _debugInterpreters.get("interpreter1").getInterpreter());
71     assertTrue(!_debugInterpreters.containsKey("interpreter2"));
72     
73     _addInterpreter("interpreter2", _interpreter2);
74     assertSame(_interpreter1, _debugInterpreters.get("interpreter1").getInterpreter());
75     assertSame(_interpreter2, _debugInterpreters.get("interpreter2").getInterpreter());
76     
77     try {
78       _addInterpreter("interpreter1", _interpreter3);
79       fail();
80     }
81     catch (IllegalArgumentException JavaDoc ex) {
82       assertSame(_interpreter1, _debugInterpreters.get("interpreter1").getInterpreter());
83       assertSame(_interpreter2, _debugInterpreters.get("interpreter2").getInterpreter());
84     }
85   }
86   
87   /**
88    * verifies that the InterpreterJVM can switch between active interpreters.
89    */
90   public void testSwitchingActiveInterpreter() throws ExceptionReturnedException {
91     String JavaDoc var0 = "stuff";
92     String JavaDoc var1 = "junk";
93     String JavaDoc var2 = "raargh";
94     Object JavaDoc val0 = new Byte JavaDoc("5");
95     Object JavaDoc val1 = new Short JavaDoc("2");
96     Object JavaDoc val2 = new Long JavaDoc(2782);
97     _addInterpreter("1",_interpreter1);
98     _addInterpreter("2",_interpreter2);
99     
100     JavaInterpreter interpreter = (JavaInterpreter) jvm.getActiveInterpreter();
101     interpreter.defineVariable(var0, val0);
102     assertEquals(val0, interpreter.interpret(var0));
103
104     jvm.setActiveInterpreter("1");
105     interpreter = (JavaInterpreter) jvm.getActiveInterpreter();
106     try {
107       interpreter.interpret(var0);
108       fail();
109     }
110     catch (ExceptionReturnedException ex) {
111       // correct behavior -- var0 should not be defined
112 }
113     interpreter.defineVariable(var1,val1);
114     assertEquals(val1, interpreter.interpret(var1));
115     
116     jvm.setActiveInterpreter("2");
117     interpreter = (JavaInterpreter) jvm.getActiveInterpreter();
118     try {
119       interpreter.interpret(var0);
120       fail();
121     }
122     catch (ExceptionReturnedException ex) {
123     }
124     try {
125       interpreter.interpret(var1);
126       fail();
127     }
128     catch (ExceptionReturnedException ex) {
129       // correct behavior -- var0 & var1 should not be defined
130 }
131     interpreter.defineVariable(var2,val2);
132     assertEquals(val2, interpreter.interpret(var2));
133
134     jvm.setToDefaultInterpreter();
135     interpreter = (JavaInterpreter) jvm.getActiveInterpreter();
136     try {
137       interpreter.interpret(var1);
138       fail();
139     }
140     catch (ExceptionReturnedException ex) {
141     }
142     try {
143       interpreter.interpret(var2);
144       fail();
145     }
146     catch (ExceptionReturnedException ex) {
147       // correct behavior -- var1 & var2 should not be defined
148 }
149     assertEquals(val0, jvm.getActiveInterpreter().interpret(var0));
150
151     jvm.setActiveInterpreter("1");
152     interpreter = (JavaInterpreter) jvm.getActiveInterpreter();
153     try {
154       interpreter.interpret(var0);
155       fail();
156     }
157     catch (ExceptionReturnedException ex) {
158     }
159     try {
160       interpreter.interpret(var2);
161       fail();
162     }
163     catch (ExceptionReturnedException ex) {
164       // correct behavior -- var1 & var2 should not be defined
165 }
166     assertEquals(val1, interpreter.interpret(var1));
167
168     try {
169       jvm.setActiveInterpreter("not an interpreter");
170       fail();
171     }
172     catch (IllegalArgumentException JavaDoc ex) {
173       assertEquals("Interpreter 'not an interpreter' does not exist.", ex.getMessage());
174     }
175   }
176 }
177
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